Invention Grant
US07920360B2 Torsion compensation coil for voice coil motor of disk drive device, and method of making the same
有权
磁盘驱动装置的音圈马达的扭转补偿线圈及其制造方法
- Patent Title: Torsion compensation coil for voice coil motor of disk drive device, and method of making the same
- Patent Title (中): 磁盘驱动装置的音圈马达的扭转补偿线圈及其制造方法
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Application No.: US11802329Application Date: 2007-05-22
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Publication No.: US07920360B2Publication Date: 2011-04-05
- Inventor: Francisco Obregon , Mark S. Seymour , John E. Scura
- Applicant: Francisco Obregon , Mark S. Seymour , John E. Scura
- Applicant Address: CN Hong Kong
- Assignee: SAE Magnetics (H.K.) Ltd.
- Current Assignee: SAE Magnetics (H.K.) Ltd.
- Current Assignee Address: CN Hong Kong
- Agency: Nixon & Vanderhye P.C.
- Main IPC: G11B21/02
- IPC: G11B21/02

Abstract:
Certain example embodiments relate to torsion compensation coils that cooperate with primary coils in voice coil motors of disk drive devices, and methods of making the same. In certain example embodiments, a voice coil motor is provided which may include a single external magnet. A primary coil may be located above the external magnet, with the primary coil being capable of receiving a first current. At least one torsion compensation coil may be connected to the primary coil. The at least one torsion compensation coil may be capable of receiving a second current. The at least one torsion compensation coil may be configured to reduce torsion and/or bending forces introduced by the first current passing through primary coil and/or magnetic field leakage from the external magnet.
Public/Granted literature
- US20080291563A1 Torsion compensation coil for voice coil motor of disk drive device, and method of making the same Public/Granted day:2008-11-27
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